Das Abhijit, Boruah Bosanta R
Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
Rev Sci Instrum. 2014 Apr;85(4):046103. doi: 10.1063/1.4870281.
In this work we describe laser beam scanning using a ferroelectric liquid crystal spatial light modulator. Commercially available ferroelectric liquid crystal spatial light modulators are capable of displaying 85 colored images in 1 s using a time dithering technique. Each colored image, in fact, comprises 24 single bit (black and white) images displayed sequentially. We have used each single bit image to write a binary phase hologram. For a collimated laser beam incident on the hologram, one of the diffracted beams can be made to travel along a user defined direction. We have constructed a beam scanner employing the above arrangement and demonstrated its use to scan a single laser beam in a laser scanning optical sectioning microscope setup.
在这项工作中，我们描述了使用铁电液晶空间光调制器进行激光束扫描。市售的铁电液晶空间光调制器能够使用时间抖动技术在1秒内显示85幅彩色图像。实际上，每幅彩色图像由24幅依次显示的单比特（黑白）图像组成。我们利用每幅单比特图像来写入一个二元相位全息图。对于入射到全息图上的准直激光束，可以使其中一束衍射光束沿用户定义的方向传播。我们构建了一个采用上述装置的光束扫描仪，并展示了其在激光扫描光学切片显微镜设置中用于扫描单束激光束的用途。
